MAX9390_07 Datasheet, PDF(1/14 Page) Maxim Integrated Products – Anything-to-LVDS Dual 2 x 2 Crosspoint Switches

English

English German Russian Spanish Italian Polish Chinese Japanese Korean French Portuguese	Language :

MAX9390_07 Datasheet, PDF (1/14 Pages) Maxim Integrated Products – Anything-to-LVDS Dual 2 x 2 Crosspoint Switches

19-2829; Rev 2; 5/07

Anything-to-LVDS Dual 2 x 2

Crosspoint Switches

General Description

The MAX9390/MAX9391 dual 2 x 2 crosspoint switches

perform high-speed, low-power, and low-noise signal

distribution. The MAX9390/MAX9391 multiplex one of two

differential input pairs to either or both low-voltage differ-

ential signaling (LVDS) outputs for each channel.

Independent enable inputs turn on or turn off each differ-

ential output pair.

Four LVCMOS/LVTTL logic inputs (two per channel) con-

trol the internal connections between inputs and outputs.

This flexibility allows for the following configurations: 2 x 2

crosspoint switch, 2:1 mux, 1:2 splitter, or dual repeater.

This makes the MAX9390/MAX9391 ideal for protection

switching in fault-tolerant systems, loopback switching for

diagnostics, fanout buffering for clock/data distribution,

and signal regeneration.

Fail-safe circuitry forces the outputs to a differential low

condition for undriven inputs or when the common-

mode voltage exceeds the specified range. The

MAX9390 provides high-level input fail-safe detection

for LVDS, HSTL, and other GND-referenced differential

inputs. The MAX9391 provides low-level input fail-safe

detection for LVPECL, CML, and other VCC-referenced

differential inputs.

Ultra-low 82ps(P-P) (max) pseudorandom bit sequence

(PRBS) jitter ensures reliable communications in high-

speed links that are highly sensitive to timing error,

especially those incorporating clock-and-data recovery,

or serializers and deserializers. The high-speed switch-

ing performance guarantees 1.5GHz operation and less

than 65ps (max) skew between channels.

LVDS inputs and outputs are compatible with the

TIA/EIA-644 LVDS standard. The LVDS outputs drive

100Î© loads. The MAX9390/MAX9391 are offered in a

32-pin TQFP package and operate over the extended

temperature range (-40Â°C to +85Â°C).

Also refer to the MAX9392/MAX9393 with flow-through

pinout.

Applications

High-Speed Telecom/Datacom Equipment

Central-Office Backplane Clock Distribution

DSLAM

Protection Switching

Fault-Tolerant Systems

Features

â¦ 1.5GHz Operation with 250mV Differential Output

Swing

â¦ 2ps(RMS) (max) Random Jitter

â¦ AC Specifications Guaranteed for 150mV

Differential Input

â¦ Signal Inputs Accept Any Differential Signaling

Standard

â¦ LVDS Outputs for Clock or High-Speed Data

â¦ High-Level Input Fail-Safe Detection (MAX9390)

â¦ Low-Level Input Fail-Safe Detection (MAX9391)

â¦ 3.0V to 3.6V Supply Voltage Range

â¦ LVCMOS/LVTTL Logic Inputs Control Signal

Routing

Ordering Information

PART

TEMP RANGE

MAX9390EHJ -40Â°C to +85Â°C

MAX9390EHJ+ -40Â°C to +85Â°C

MAX9391EHJ -40Â°C to +85Â°C

MAX9391EHJ+ -40Â°C to +85Â°C

+Denotes a lead-free package.

PIN-

PACKAGE

32 TQFP

PKG

CODE

H32-1

Pin Configurations

TOP VIEW

ENB1 1

OUTB1 2

OUTB1 3

GND 4

ENB0 5

OUTB0 6

OUTB0 7

VCC 8

32 31 30 29 28 27 26 25

MAX9390

MAX9391

24 VCC

23 OUTA0

22 OUTA0

21 ENA0

20 GND

19 OUTA1

18 OUTA1

17 ENA1

9 10 11 12 13 14 15 16

Functional Diagram and Typical Operating Circuit appear at

end of data sheet.

TQFP

________________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maximâs website at www.maxim-ic.com.

▷